Solar System Debris

the region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found

7.

a spherical shell of cometary bodies believed to surround the sun far beyond the orbits of the outermost planets and from which some are dislodged when perturbed to fall toward the sun

9.

an icy small Solar System body that, when passing close to the Sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail.

10.

a piece of rock or metal that burns and glows brightly in the sky as it falls from outer space into the Earth's atmosphere

11.

forms when ultraviolet sunlight rips one or more electrons from gas atoms in the coma

12.

a band of small celestial bodies beyond the orbit of Neptune from which many short-period comets are believed to originate

Down

1.

a piece of rock or metal that has fallen to the ground from outer space

2.

the head of a comet consisting of a cloud of gas and dust and usually containing a nucleus

4.

a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky

5.

any of the small rocky celestial bodies found especially between the orbits of Mars and Jupiter

8.

consists of dust particles that have been pushed out of the coma by radiation pressure from the sun

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